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From: prindle@nadc
Newsgroups: net.micro.cbm
Subject: C-128 CP/M MFM diskette formats supported
Message-ID: <250@rutgers.RUTGERS.EDU>
Date: Mon, 27-Oct-86 09:35:00 EST
Article-I.D.: rutgers.250
Posted: Mon Oct 27 09:35:00 1986
Date-Received: Mon, 27-Oct-86 22:18:41 EST
Sender: daemon@rutgers.RUTGERS.EDU
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 20

From: prindle@NADC

While peeking around in the CP/M BIOS (trying, with reasonable success, to
read MS-DOS diskettes with a public domain program called RDMS), I ran across
two additional diskette formats that the BIOS is keyed up to recognize: SLICER
and EPSON EURO.  Anybody ever heard of one of these systems?

What I've been able to find out is that by poking the right values (ahh.. that's
the key - the *right* values) into the MFM Disk Format Table (as documented,
sort of, in the 128 PRG), you can make C-128 CP/M read just about any format.
There are spare slots in the table.  The info you need for a diskette format
is bytes/sector, sectors/track, sides, where the allocation block and directory
blocks are, how the tracks and sectors are numbered, etc.  Given all the
necessary info, it would seem that it would be a snap to write a sort of
"UNIFORM-128" program.  The question is: where are all the 5.25 inch CP/M
diskette formats documented?

Sincerely,
Frank Prindle
Prindle@NADC.arpa